Performing a Cloud Observation

A cloud observation consists of: 

  • Identifying the types of clouds present

  • Estimation of the amount of each cloud type

  • Estimation of the height of the cloud base for each cloud type

After the observation is performed, an observer must then consider any specific requirements regarding how the observation is disseminated to end users, i.e., via an aerodrome weather report, ATIS broadcast, plain language radiotelephony, etc.

Note: Cloud observations performed for inclusion in Aerodrome Weather Reports consider all cloud observed under the ‘celestial dome’. Alternative reporting methods such as the ATIS broadcast may exclude cloud observed beyond particular distances and heights based on industry requirements.